Supercharged Two Stroke Grenades Head on Dyno!

26 Comments

1. 

   Thank you The Ridge for the awesome wallet and for supporting the channel! Check them out here: https://ridge.com/2strokestuffing
   Use code 2STROKESTUFFING for 10% off!

2. 

   Almost as powerful as my kx125 and not even tuned yet crazy! 😮

3. 

   Any tips on how to get more power out of a 2000 CR125? I have it bored to 134cc. Lectron carburetor, pro circuit exhaust, vforce reeds. Still want more power!

4. 

   Fella is smart he will figure it out whether it's on his own or from everyone's input

5. 

   What kind of software and cnc hardware are you using for your milling machine?

6. 

   got a steel bucket perfect for ice and human head. hell were always looking for a bad pimp or good pimp to decapitate and show some clientes its a goid joke bcuz theyre like sulose to not know who the pimp is… yall have fun on a saturday night kids

7. 

   Have you tried inertia runs for acceleration and the retarder for steady state ?

8. 

   A retarder has a maximum rpm and your gear ratio may not be suited.

   How are you braking the engine ? Is it a ramp rate or a fixed load ?

   I suggest a fast ramp rate and slow it down after you have everything working

   Retarders are not efficient at low rpm

   Your load control is automatic or manual ?

9. 

   A couple things i saw that are screwing you. 1, when you set up a load cell with an eddie brake, usually the cell is oriented completely vertical, and it's applied to the brakes coil bracket. You have it mounted to the reaction member (engine block) of the engine. You can easily get spikes in load from accelerating the crank that isnt useful power output, but the dyno thinks it is. You can see this in your torque numbers flipping positive and negative when you were keeping it idling. If you throw a spike in the data, the computer is quickly going to compensate and add brake regardless if that power made it to the chain or not. Another thing that's killing you is that you are spinning the brake so slow and theres no mass attached to it besides the 2 rotors of its own construction. All the load is also significantly gear reduced. This multiplies the response of the brake by the gear ratio you are running. And this leads me into another problem you have. Imagine you have your front wheel on your bycicle gear reduced to a small light weight flywheel at a ratio of lets say 6:1. Attached to this flywheel is your front brakes. Now you want to do something like an indo on the front wheel down a short hill. That takes a lot of finesse with the brake. Well now because your front brake is over six times more sensitive, it makes that feet much much more difficult if not impossible. That's the same job that the Dyno has to do. And because it is so sensitive, you run into a problem where the PID for the brake may not be able to adjust for your level of sensitivity. Lets say that you are free spin at 0% brake, slight load at 2% and stall at 3% brake application. The brake has a finite level of adjustment. Typically a power of 2 to something. 255, 1024, 4096.. Lets say it's 255 adjustments. That means between your 3% operating range you only have 7 adjustments for load. That's not very adjustable. Then you have the dyno PID controls. It was showing a LOT of what they call overshoot/undershoot. Usually this is done when a PID algorithm used to control the dyno is not matched to the system that it is controlling. Usually it means it's too aggressive. Maybe too much P term, or not enough D term. Either way, it's best in my opinion if the load cell is mounted vertically to the eddy brake center. You set a 5kg weight directly on top of the cell and you're calibrated. For torque calculation then it's all just a factor of the gear ratio. You get no more false torque spikes from accelerating the rotating assembly, you only read torque absorbed by the brake, and it will produce MUCH cleaner feedback for the dyno to be able to adjust the eddy brake.

10. 

    What bhp are you thinking you will possibly going to get out of the engine

11. 

    Turn the blade backwards it won't catch like that

12. 

    continuous burn steel impeller (reaction turbine) pump generator!! the simples most powerful power train ever

13. 

    Totally awesome man 👌… glad to see some numbers and it seems pretty close to legit at the end there… for sure ain't making 1000HP though LOL… can't wait to see the next video as always… you are the only one I legitimately pay attention to and don't skip around 😉 mad skills

14. 

    wow man… that looked wild when the saw grabbed and almost made way with your hand… glad you are okay… that stuff can happen so fast makes a guy think… cool you showed it… LOVE the videos and the knowledge you share is top notch… i share what i know on my channel and its rewarding but im definitely not on your level my friend.

15. 

    I only saw this dude just now? WTF?

16. 

    Another Great Video👍

17. 

    one of the best channels in existence.

18. 

    This was a very good episode. Absolutely loving this channel!

19. 

    I saw an rs125 right?

20. 

    best 2 strokes engine ever (sound like 50cc 4strokes)

21. 

    I did the same thing cutting aluminum with my wood saw. It works so good except for that last time that scared the ghost out of you. Then you don’t want to touch it again. I’m glad your all one piece.

22. 

    PID tuning required on load measurement system

23. 

    I think I. The near future u can espect a call from a formula one team sir, can we order a v12 model?

24. 

    Great Wideo

25. 

    @Whoop!

26. 

    Things that go as expected are boring 😆